Churn-dasher



(No Model.)

H. T. DAVIS.

Churn Dasher.

No. 242,608. Patented June 7,1881.

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trap STATES PATENT ()FFICE.

HENRY T. DAVIS, OF ATHENS, TENNESSEE.

CHURN-DASHER.

SPECIFICATION forming part of Letters Patent No. 242,608, dated June -'7, 1881.

Application filed February 5, 1881. (No model.)

To all whom it may concern Be it known that I, HENRY T. DAVIS, a citizen of the United States, residing at Athens, in the county of McMinn and State of Tennessee, have invented Improvements in Ohurns, of which the following is a specification.

My improvements relate to the combination, with hinged propeller-blades in a churn-dasher, of adjustable clips or stops adapted to limit the deflection of the blades, or, when desired, to prevent their deflection, so as to regulate the speed of rotation of the wheel or prevent its rotation when desired.

In the accompanying drawings, Figure 1 is a vertical section of a churn illustrating the invention, the dasher being shown in elevation. Fig. 2 is an under-side view of the dasher. Fig. 3 is a perspective view of a portion of the dasher, showing one of the hinged wings and the adjustable stops by which its play is lim ited. Fig. 4 is a vertical longitudinal section of the water-chamber.

A represents a churn-tub, of common form, for the reception of a vertical dasher, and B the customary perforated cover, through which the dasher-staif D works. The central opening in the cover B is closed by an annularstopper, 0, preferably of soft rubber, so that the dasher-staff may work freely within it, while the escape of cream is efiectually prevented. The head of the dasher is formed of a wheel, E F G, E being the rim, F F radial spokes, and

G a central hub fitted to turn upon the lower end of the dasher-staft' D. The spokes F are shown in the present illustration four in number, and the spaces between them are occupied by an equal number of blades, H, hinged at h to the respective spokes of the wheel, and limited in play by adjustable stops I, between which the otherwise free ends of the bladesH move. The stops I are in the form of clips secured to the rim E of the wheel and projecting inward, so as to embrace the edges of the hinged plates H, as shown. The said stops are adjusted in width by compressing their ends together or separating them, as required, in order to regulate the play of the blades,

or, when desired, to prevent any vertical motion thereof within the wheel. By this arrangement it will appear that the alternate upward and downward movement of the dasher will by the resistance of the cream deflect the blades H alternately in opposite directions, so as to impart a continuous rotary motion to the propeller-wheel E F G H under such reciproeating vertical motion. The speed of this rotation is regulated as desired by the contraction orexpansion of the extremities of the stops 1; or when it is desired to prevent such radial motion a simple reciprocating dasher of efficient construction is provided by compressing the stops in contact with the blades, so as to confine them against vertical motion, and thus prevent their deflection.

J represents a water-chamber fixed to the dasher-stat'f D, above the wheel E F G H,for the purpose of regulating the temperature of the cream, hot-water being supplied to the said chamber when the cream is too cold, and cold water or ice when it is too warm. The waterchamber is tightly closed by a stopper, K.

Any well-known refrigerating mixture or chemicals may be used, instead of water or ice, within the chamberJ, thetightclosure of which prevents the mixture of such chemicals with the cream. This water-chamber J is of corresponding horizontal area to that of the wheel E F G. By extending this chamber horizontally across the tub its influence extends over a larger area than where such chamber is of less area horizontally than the wheel.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

The combination of the wheel E F G,'hinged blades H, and vertically-adjustable stops 1, secured to the edge of the wheel and embracing the edges of said blades H, as and for the purpose described.

HENRY T. DAVIS.

Witnesses D. A. GLEAGE, WM. 0. DAVIS. 

